Kate spotted during 'down-to-earth mum moment' with Prince Louis and Prince George

The Duchess of Cambridge perfectly blended in with fellow parents as she headed to

a trampolining park in south-west London, a source has claimed.

Kate attracted little attention to herself as she was seen

keeping an eye on her sons having fun at the activity centre.

A source told Hello! magazine: "Kate takes her kids

to the trampoline park quite regularly and really blends in as any other mum.

She went a couple of Saturdays ago with George and Louis and took her shoes off

like everyone else, and was walking around the edge of the trampolines following her sons.

It was a very down-to-earth mum moment, very sweet.